Affordable door access management solution. Smart, simple and secure entry to commercial properties

6440ENT Door Controller

Bluetooth® Door Controller

Model No. 6440ENT

Learn More about the Bluetooth Door Controller
Technician installing a Master Lock® Bluetooth® Door Controller.

Works with most electric strikes and fits within common door frames.

Flexible Asset Management

Whether it’s one door, one lock or thousands, Master Lock Vault Enterprise provides unmatched security, simplicity and accountability. With the convenient web interface, administrators can remotely grant or revoke access for an individual or group, a single lock or system-wide. The software maintains detailed access history-including unlock, open and relock activity-by each user and lock.

  • Simple configuration to enable system-wide customization
  • Create multiple subgroups and individualize access levels
  • Review robust audit trail by user and lock
Flexible Asset Management: Bluetooth® Padlocks, Bluetooth® Lock Boxes, Bluetooth® Door Controller
Retail door
Warehouse service door
Warehouse garage door
Service door to a metal warehouse building

Ideal Access Control for:

  • Commercial Property
  • Retail Storefronts
  • Employee Entrances
  • Warehouse Entrances
  • Service Doors

Features & Benefits:

Door Access Management Solutions


  • Provides cost-effective door access control
  • Grant or revoke access quickly ensuring the right users have the right access
  • Easily monitor access and access history with robust data and audit trails
  • Simplify security set-up with bulk user and lock uploads
  • Leverage the security of 256-bit military-grade encryption
  • Easily wires into electric strikes or magnetic locks
  • Intuitive software and smartphone app

The Simplicity and Savings of Keyless Security

Combine the cost benefits and convenience of keyless security with the control, flexibility and accountability of Bluetooth enabled hardware and integrated Master Lock Vault Enterprise integrated software. The integrated solution provides efficient and effective administration of security management and user access across a single location or entire enterprise.

4400ENT 4401LHENT 5440ENT 5441ENT 6440ENT
Lock Dimensions
Full Height 3.15in (80mm) 5.30in (135mm) 7.2in (183mm) 4.98in (127mm) 5.25in (133mm)
Body Height 1.99in (50mm) 2.93in (74mm) 4.98in (127mm) 5.25in (133mm)
Body Width 1.85in (47mm) 2.22in (56mm) 3.32in (83MM) 1.40in (36mm)
Body Depth 1.07in (27mm) 1.06in (28mm) 2.27in (59mm) .80in (20mm)
Wire Length 9in (229mm)
Internal Compartment Dimensions
Height 3.60in (91.4mm)
Width 2.50in (63.5mm)
Depth 1.10in (27.9mm)
Cubic Capacity 7.3cu in (119.6cu cm) 7.9cu in (124.5cu cm)
Shackle Dimensions
Height 7/8in (22mm) 2in (51mm) 1-13/16in (46mm) N/A
Width 13/16in (20mm) 5/16in (23mm) 1-13/32in (36mm) N/A
Diameter 9/32in (7mm) 11/32in (9mm) 13/32in (10mm) N/A
Technical Specifications
Weight .51lbs (.229kg) .78lbs (.353 kg) 2.55lbs (1.2kg) 2.35lbs (1.1kg) .30lbs (.136kg)
Operating Temp. 25° to 150°F (-4° to 65°C) -13° to 150°F (-25° to 65°C) -40° to 125°F (-40° to 52°C) -40° to 125°F (-40° to 52°C) -40° to 125°F (-40° to 52°C)
Battery Type CR2450 CR2 CR123A CR123A
Jump Battery CR2450 9V 9V 9V
Power Input 12-24 VDC, 20mA average
Opening Code Types
Primary 1 1 1 1
Secondary 0 0 5 5
Temporary 1 1 1 1
Software Compatibility
IOS Version: 10 or later. Device: 6 or later. ANDROID Version: 5 or later. Device: Various. Web Management: Chrome, Safari, Firefox, Internet Explorer (Edge).

Electronic Product Support